求教关于UMTS的定义，谢谢各位

3gpp的网站上有这样一段定义
Universal Mobile Telecommunications System
UMTS - sometimes referred to as 3GSM to highlight the evolution of 3G from its GSM foundations - is an umbrella term for the third generation radio technologies developed within 3GPP.
The radio access specifications provide for Frequency Division Duplex (FDD) and Time Division Duplex (TDD) variants, and several chip rates are provided for in the TDD option, allowing UTRA technology to operate in a wide range of bands and co-exist with other radio access technologies.
UMTS includes the original W-CDMA scheme using paired or unpaired 5 MHz wide channels in globally agreed bandwidth around 2 GHz, though subsequently, further bandwidth has been allocated by the ITU on a regional basis.
These are detailed in 3GPP Technical Specifications 25.101 (FDD) and 25.102 (TDD), and allow for the eventual re-use of bands currently assigned to 2G services.
W-CDMA was specified in Release 99 and Release 4 of the specifications. High Speed Packet Access (HSPA) was introduced in Releases 5 (Downlink) and 6 (Uplink) giving substantially greater bit rates and improving packet-switched applications.
从以上文字是否可以得出结论umts就是wcdma？

R99 R4 R5 R6 R7 R8....LTE
都是一个东西
UMTS通信系统采用WCDMA技术，并且向LTE演进

UMTS != WCDMA
WCDMA从概念上来说只是UMTS的无线接入部分（TD-SCDMA也是的）

恩
只是UMTS的一部分

可是很多字典上都写着umts也成为wcdma，这是为什么呢

这样较真没意义

字典也会出错

不要看翻译的
批判的继承
你明白意思就是了

因为我工作上有个问题跟这个相关，质检的以这两个一样为由，判定我做错了，我要反驳嘛，必须得较真啊。

你们什么工作.....

对 应该还包括PS/CS网向全IP网的演进

UMTS是系统
WCDMA是无线接入技术
这个关系应该很明显了
不用再争啦

UMTS的无线接入技术按双工方式分有FDD和TDD两种，FDD就是WCDMA，TDD按码片速率分有HCR和LCR两种，HCR一般也称UTRA TDD，LCR即指TDSCDMA，码片速率1.28M
UMTS的核心网继承GSM的架构，一般称之为GSM MAP
类型，
与之对应的是ANSI-41，就是美国的CDMA系统

perfect
相当完整

能问一下么？采用wcdma无线接入技术的系统，与wcdma系统有什么区别么？

不是说了吗？
WCDMA只是一种无线接入技术
更狭隘的说它只是一种空中接口的物理层技术
广义上可以认为它是无线接入系统
属于整个UMTS的一部分

好的，谢谢